Case
JSONEncoder.DataEncodingStrategy.custom(_:)
iOS 8.0+
iPadOS 8.0+
Mac Catalyst 8.0+
macOS 10.10+
tvOS 9.0+
watchOS 2.0+
The strategy that encodes data using a user-defined function.
@preconcurrency case custom(@Sendable (Data, any Encoder) throws -> Void)Discussion
If the closure fails to encode a value into the given encoder, the encoder will encode an empty automatic container in its place.